The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 09, 1999
Filed:
Sep. 16, 1997
Frederick Frank Kazmierczak, San Jose, CA (US);
Michael John Raffetto, Scotts Valley, CA (US);
Seagate Technology, Inc., Scotts Valley, CA (US);
Abstract
A disc mounting system for mounting the discs of a disc drive in a fixed radial relationship to the hub of a spindle motor. The disc mounting system includes a disc mounting ring associated with each disc in the disc stack. The disc mounting ring includes at least one axially extending finger against which a portion of the inner diameter of the disc is brought to bear in an interference fit. In a first embodiment of the invention, the disc mounting ring includes a single finger and that portion of the inner diameter of the disc radially opposite the finger directly contacts the spindle motor hub. In other embodiments of the invention, the disc mounting ring includes a plurality of fingers spaced circumferentially about the ring and the inner diameter of the disc bears on all fingers and has no direct contact with the spindle motor hub. In all embodiments, it is envisioned that sufficient axial force will be applied to the discs at the time of manufacture to produce some cold-flowing of the disc mounting ring material of the fingers. Mechanisms for controlling the axial location of the discs relative to the spindle motor hub are also disclosed.